[REMOVAL] Removed deprecated semantic convention header files. (#3475)

Author: marcalff

CHANGELOG.md

@@ -27,6 +27,46 @@ Increment the:
 * [BUILD] Upgrade opentelemetry-proto to 1.7.0
   [#3443](https://github.com/open-telemetry/opentelemetry-cpp/pull/3443)
 
+* [REMOVAL] Removed deprecated semantic convention header files
+  [#3475](https://github.com/open-telemetry/opentelemetry-cpp/pull/3475)
+
+Important changes:
+
+* [REMOVAL] Removed deprecated semantic convention header files
+  [#3475](https://github.com/open-telemetry/opentelemetry-cpp/pull/3475)
+
+  * Old semantic conventions header files have been removed,
+    per announcement from Nov 9, 2024, see
+   [#3105](https://github.com/open-telemetry/opentelemetry-cpp/pull/3105)
+
+  * Mitigation steps are repeated below, for convenience.
+
+  * Two things have changed:
+
+    * the header file to use
+    * the symbol name to use.
+
+    Before, the semantic convention for `url.full` was:
+
+    * declared in file `semantic_conventions.h`
+    * declared as symbol `SemanticConventions::kUrlFull`
+
+    Now, the `url.full` convention, which is part or the `url` group, is:
+
+    * declared in file `semconv/url_attributes.h`
+    * declared as symbol `semconv::url::kUrlFull`
+
+    Application code that uses semantic conventions must be adjusted
+    accordingly.
+
+    In addition, semantic conventions that are not marked as stable
+    are generated in a different header file, placed under directory
+    `incubating`, to better separate stable and non stable code.
+
+    For example, file `semconv/incubating/url_attributes.h`
+    defines `semconv::url::kUrlDomain`,
+    which is not marked as stable in semconv v1.27.0
+
 ## [1.21 2025-05-28]
 
 * [BUILD] Remove WITH_ABSEIL

DEPRECATED.md

@@ -62,78 +62,4 @@ N/A
 
 ## Semantic conventions
 
-### Header files "semantic_conventions.h"
-
-#### Announcement (semantic_conventions.h)
-
-Deprecation is announced as part of the migration to weaver:
-
-* `Version:` release following opentelemetry-cpp 1.17.0
-* `Date:` Nov 9, 2024
-* `PR:` [PR 3105](https://github.com/open-telemetry/opentelemetry-cpp/pull/3105)
-
-#### Motivation (semantic_conventions.h)
-
-The header files for semantic conventions are generated automatically.
-The tooling to generate these files is changing:
-
-* before, the build-tool repository was used
-* now, the weaver repository is used
-
-Changes in tooling allows to generate code that is better organized,
-with dedicated header files per group of semantic conventions,
-instead of a single header file for everything.
-
-#### Scope (semantic_conventions.h)
-
-The following files:
-
-* `api/include/opentelemetry/trace/semantic_conventions.h`
-* `sdk/include/opentelemetry/sdk/resource/semantic_conventions.h`
-
-are now deprecated.
-
-They correspond to semantic conventions v1.27.0,
-and will no longer be maintained up to date.
-
-These files will be removed in the future.
-
-#### Mitigation (semantic_conventions.h)
-
-Two things have changed:
-
-* the header file to use
-* the symbol name to use.
-
-Before, the semantic convention for `url.full` was:
-
-* declared in file `semantic_conventions.h`
-* declared as symbol `SemanticConventions::kUrlFull`
-
-Now, the `url.full` convention, which is part or the `url` group, is:
-
-* declared in file `semconv/url_attributes.h`
-* declared as symbol `semconv::url::kUrlFull`
-
-Application code that uses semantic conventions must be adjusted
-accordingly.
-
-In addition, semantic conventions that are not marked as stable
-are generated in a different header file, placed under directory
-`incubating`, to better separate stable and non stable code.
-
-For example, file `semconv/incubating/url_attributes.h`
-defines `semconv::url::kUrlDomain`,
-which is not marked as stable in semconv v1.27.0
-
-#### Planned removal (semantic_conventions.h)
-
-The following files:
-
-* `api/include/opentelemetry/trace/semantic_conventions.h`
-* `sdk/include/opentelemetry/sdk/resource/semantic_conventions.h`
-
-will be removed.
-
-The removal date is planned for July 1, 2025.
-This allows more than six months for applications to adjust.
+N/A